期刊
NEUROBIOLOGY OF AGING
卷 31, 期 8, 页码 1326-1339出版社
ELSEVIER SCIENCE INC
DOI: 10.1016/j.neurobiolaging.2010.04.006
关键词
Body mass index (BMI); Brain structure; Tensor-based morphometry; ADNI; Alzheimer's disease; Mild cognitive impairment
资金
- ADNI (National Institutes of Health) [U01 AG024904]
- National Institute on Aging
- National Institute of Biomedical Imaging and Bioengineering
- NIH [P30 AG010129, K01 AG030514]
- Dana Foundation
- NIBIB [R01 EB007813, R01 EB008281, R01 EB008432]
- NICHD [R01 HD050735]
- NIA [R01 AG020098]
- National Institutes of Health through the NIH Roadmap for Medical Research [U54-RR021813]
Obesity is associated with lower brain volumes in cognitively normal elderly subjects, but no study has yet investigated the effects of obesity on brain structure in patients with mild cognitive impairment (MCI) or Alzheimer's disease (AD). To determine if higher body mass index (BMI) is associated with brain volume deficits in cognitively impaired elderly subjects, we analyzed brain magnetic resonance imaging (MRI) scans of 700 MCI or AD patients from 2 different cohorts: the Alzheimer's Disease Neuroimaging Initiative (ADNI) and the Cardiovascular Health Study-Cognition Study (CHS-CS). Tensor-based morphometry (TBM) was used to create 3-dimensional maps of regional tissue excess or deficits in subjects with MCI (ADNI, n = 399; CHS-CS, n = 77) and AD (ADNI, it = 188; CHS, n = 36). In both AD and MCI groups, higher body mass index was associated with brain volume deficits in frontal, temporal, parietal, and occipital lobes; the atrophic pattern was consistent in both ADNI and CHS populations. Cardiovascular risk factors, especially obesity, should be considered as influencing brain structure in those already afflicted by cognitive impairment and dementia. (C) 2010 Elsevier Inc. All rights reserved.
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